<!--
 * @Descripttion: 
 * @version: 
 * @Author: wtzhang
 * @Date: 2021-07-29 18:01:50
 * @LastEditors: wtzhang
 * @LastEditTime: 2021-07-30 10:05:39
-->
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>hello react</title>
</head>
<body>
  <!-- 准备好一个容器 -->
  <div id="test"></div>
  
  <!-- 引入react核心库 -->
  <script src="../js/old_version/react.development.js"></script>
  <!-- 引入react-dom 用于支持react操作DOM -->
  <script src="../js/old_version/react-dom.development.js"></script>
  <script type="text/javascript">
    // 1. 创建虚拟dom
    // React.createElement('标签', {标签属性}, '内容填充')
    // const VDOM = React.createElement('h1', {id: 'title'}, 'Hello, React')
    const VDOM = React.createElement('h1', {id: 'title'}, React.createElement('span', {}, 'hello, react!'))
    // 2. 渲染虚拟dom到页面
    // ReactDOM.render(虚拟DOM, 容器)
    ReactDOM.render(VDOM, document.getElementById('test'))
  </script>
</body>
</html>